Global Patent Index - EP 2784891 A4

EP 2784891 A4 20150909 - DC FEEDING PROTECTION RELAY DEVICE AND FAILURE DETECTION METHOD

Title (en)

DC FEEDING PROTECTION RELAY DEVICE AND FAILURE DETECTION METHOD

Title (de)

SCHUTZRELAISVORRICHTUNG FÜR GLEICHSTROMVERSORGUNG UND FEHLERERKENNUNGSVERFAHREN

Title (fr)

DISPOSITIF RELAIS DE PROTECTION D'ALIMENTATION CC ET PROCÉDÉ DE DÉTECTION DE DÉFAILLANCE

Publication

EP 2784891 A4 20150909 (EN)

Application

EP 12851794 A 20121030

Priority

  • JP 2011254353 A 20111121
  • JP 2012078022 W 20121030

Abstract (en)

[origin: EP2784891A1] An input means inputs, at intervals of a unit time, a current which is supplied from a substation. A first calculation means calculates a current variation amount per the unit time, based on the current which is input at the intervals of the unit time. A holding means holds, at the intervals of the unit time, a maximum value of the calculated current variation amount. A second calculation means calculates an operation amount by integrating the maximum value of the current variation amount held by the holding means at the intervals of the unit time. A detection means detects a fault in a section to which a current is supplied from the substation, based on the calculated operation amount.

IPC 8 full level

H02H 3/16 (2006.01); B60M 3/00 (2006.01); H02H 3/44 (2006.01); H02H 7/26 (2006.01)

CPC (source: EP)

H02H 3/16 (2013.01); B60M 3/00 (2013.01); H02H 3/445 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2784891 A1 20141001; EP 2784891 A4 20150909; BR 112014012289 A2 20170523; CN 103858298 A 20140611; CN 103858298 B 20160420; JP 2013110869 A 20130606; JP 5951237 B2 20160713; WO 2013077152 A1 20130530

DOCDB simple family (application)

EP 12851794 A 20121030; BR 112014012289 A 20121030; CN 201280049681 A 20121030; JP 2011254353 A 20111121; JP 2012078022 W 20121030